Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
BX80524P500128 FV80524RX500128	500 MHz	66 MHz FSB, 128KB	P01 or greater
BX80524P533128 BX80526F533128 FV80524RX533128 RB80526RX533128	533 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F566128 RB80526RX566128	566 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F600128 RB80526RX600128	600 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F633128 RB80526RX633128	633 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F667128 RB80526RX667128	667 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F700128 RB80526RX700128	700 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F733128 RB80526RX733128	733 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F766128 RB80526RX766128	766 MHz	66 MHz FSB, 128 KB	P01 or greater
BX80526F800128 RB80526RY800128	800 MHz	100 MHz FSB, 128 KB	P01 or greater
Intel Pentium III
	500E MHz	100 MHz FSB, 256 KB	P01 or greater
	533EB MHz	133 MHz FSB, 256 KB	P01 or greater
	550E MHz	100 MHz FSB, 256 KB	P01 or greater
	600E MHz	100 MHz FSB, 256 KB	P01 or greater
	600EB MHz	133 MHz FSB, 256 KB	P01 or greater
BX80526F650256 BX80526F650256E RB80526PY650256	650 MHz	100 MHz FSB, 256 KB	P01 or greater
BX80526F667256 BX80526F667256E RB80526PZ667256	667 MHz	133 MHz FSB, 256 KB	P01 or greater
BX80526F700256 BX80526F700256E RB80526PY700256	700 MHz	100 MHz FSB, 256 KB	P01 or greater
BX80526F733256 BX80526F733256E RB80526PZ733256	733 MHz	133 MHz FSB, 256 KB	P01 or greater
BX80526F750256 BX80526F750256E RB80526PY750256	750 MHz	100 MHz FSB, 256 KB	P01 or greater
BX80526F800256E RB80526PY800256	800 MHz	100 MHz FSB, 256 KB	P01 or greater
	800B MHz	133 MHz FSB, 256 KB	P01 or greater
BX80526F850256 BX80526F850256E RB80526PY850256	850 MHz	100 MHz FSB, 256 KB	P01 or greater
BX80526C866256 BX80526C866256E RB80526PZ866256 RB80533PZ866256 RK80526PZ866256 RK80533PZ866256	866 MHz	133 MHz FSB, 256 KB	P01 or greater
BX80526C933256 BX80526C933256E RB80526PZ933256 RB80533PZ933256 RK80526PZ933256 RK80533PZ933256	933 MHz	133 MHz FSB, 256 KB	P03 or greater
BX80526C1000256 BX80526C1000256 BX80530C1000256 RB80526PZ001256 RK80526PZ001256 RK80530PZ001256 RK80533PZ001256	1.0 GHz	133 MHz FSB, 256 KB	P03 or greater

When part numbers are not supplied by motherboard manufacturers, we use best guess approach to determine part numbers based on CPU model, frequency and features. In some cases our guess may be incorrect or incomplete. Please always verify part numbers before committing to buying the CPU.